Late Tertiary alluvial gravels of the Korytnica Basin (Holy Cross Mountains, Central Poland)

Abstract

Origin of the gravels overlying the Korytnica Clays and exposed in the central part of the Korytnica Basin (Holy Cross Mountains, Central Poland) is discussed and reinterpreted. Clastic material of these gravels was delivered by a river from the waste of Mesozoic rocks and older Miocene deposits remained after the Middle Miocene regression. The gravel lithesome is regarded as an erosional outlier of a greater alluvial fan deposited during a relatively longer span of time since the regression of the Middle Miocene sea (Upper Badenian or Lower Sarmatian) till the preglacial part of the Pleistocene.